Before doing anything to your laptop, make sure that it’s connected to a power source:

1. Check to make sure the AC adapter is firmly plugged into an outlet and into the laptop.
2. If the power LED light is on, press the power button to turn on the laptop.
3. If the power LED is not on, make sure the power cord is securely plugged into the laptop.
4. Check the outlet the laptop is plugged into, making sure it is the correct voltage for the laptop.
5. Check the power cord to make sure it is not damaged or frayed.
6. When all these options have been checked, use a known working AC Adapter with the laptop to see if any changes occur.